Least common language
Who
Yaghan
What
1 people
Where
South America (,Tierra del Fuego)
When
2010

The Yaghan language is an indigenous language of Tierra del Fuego. The Yaghan are estimated to have numbered between 3,000 and 10,000 before Argentina and Chile began exploring Tierra del Fuego in the late nineteenth century. Disease, relocation and exploitation caused their population to collapse rapidly, to around 70 people in 1930. Today Cristina Calderón (born approximately 1938), is the only remaining native Yaghan speaker.